“ It was a 1 surprise to me. I asked him 2 he helped me. He told me that he was also fond of 3 but was afraid of cycling at 4 . He wished that people would help him at those 5 , so he helped me,” said Zheng. Zheng was 6 by the man’s words. “I realized that the best 7 to thank 8 for his help was to 9 to help other people,” he said. Zheng’s knees were still 10 from his injuries, but he never regretted his journey.